Uncaught TypeError: Cannot read property 'nowValue' of undefined
    at Player.js:43
    at Player.js:37
    at Player.js:39
(anonymous) @ Player.js:43
(anonymous) @ Player.js:37
(anonymous) @ Player.js:39
(index):14 Uncaught ReferenceError: Player is not defined
    at HTMLDocument.<anonymous> ((index):14)
    at o (jquery.min.js:2)
    at Object.fireWith (jquery.min.js:2)
    at Function.ready (jquery.min.js:2)
    at HTMLDocument.B (jquery.min.js:2)